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Code Activity

sftpserver: Implement stat and realpath

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Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
This commit is contained in:
Jakub Jelen
2023-03-23 20:19:25 +01:00
parent 7427090a9f
commit 1fe98800d2
1 changed files with 60 additions and 2 deletions
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62
src/sftpserver.c
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@@ -821,8 +821,10 @@ SSH_SFTP_CALLBACK(process_close);
SSH_SFTP_CALLBACK(process_opendir);
SSH_SFTP_CALLBACK(process_readdir);
SSH_SFTP_CALLBACK(process_rmdir);
SSH_SFTP_CALLBACK(process_realpath);
SSH_SFTP_CALLBACK(process_mkdir);
SSH_SFTP_CALLBACK(process_lstat);
SSH_SFTP_CALLBACK(process_stat);
SSH_SFTP_CALLBACK(process_readlink);
SSH_SFTP_CALLBACK(process_symlink);
SSH_SFTP_CALLBACK(process_remove);
@@ -842,8 +844,8 @@ const struct sftp_message_handler message_handlers[] = {
{"remove", NULL, SSH_FXP_REMOVE, process_remove},
{"mkdir", NULL, SSH_FXP_MKDIR, process_mkdir},
{"rmdir", NULL, SSH_FXP_RMDIR, process_rmdir},
{"realpath", NULL, SSH_FXP_REALPATH, process_unsupposed},
{"stat", NULL, SSH_FXP_STAT, process_unsupposed},
{"realpath", NULL, SSH_FXP_REALPATH, process_realpath},
{"stat", NULL, SSH_FXP_STAT, process_stat},
{"rename", NULL, SSH_FXP_RENAME, process_unsupposed},
{"readlink", NULL, SSH_FXP_READLINK, process_readlink},
{"symlink", NULL, SSH_FXP_SYMLINK, process_symlink},
@@ -1322,6 +1324,32 @@ process_rmdir(sftp_client_message client_msg)
return ret;
}
static int
process_realpath(sftp_client_message client_msg)
{
const char *filename = sftp_client_message_get_filename(client_msg);
char *path = NULL;
SSH_LOG(SSH_LOG_PROTOCOL, "Processing realpath %s", filename);
if (filename[0] == '\0') {
path = realpath(".", NULL);
} else {
path = realpath(filename, NULL);
}
if (path == NULL) {
int status = unix_errno_to_ssh_stat(errno);
const char *err_msg = ssh_str_error(status);
SSH_LOG(SSH_LOG_PROTOCOL, "realpath failed: %d", errno);
sftp_reply_status(client_msg, status, err_msg);
return SSH_ERROR;
}
sftp_reply_name(client_msg, path, NULL);
free(path);
return SSH_OK;
}
static int
process_lstat(sftp_client_message client_msg)
{
@@ -1352,6 +1380,36 @@ process_lstat(sftp_client_message client_msg)
return ret;
}
static int
process_stat(sftp_client_message client_msg)
{
int ret = SSH_OK;
const char *filename = sftp_client_message_get_filename(client_msg);
struct sftp_attributes_struct attr;
struct stat st;
int status = SSH_FX_OK;
int rv;
SSH_LOG(SSH_LOG_PROTOCOL, "Processing stat %s", filename);
if (filename == NULL) {
sftp_reply_status(client_msg, SSH_FX_NO_SUCH_FILE, "File name error");
return SSH_ERROR;
}
rv = stat(filename, &st);
if (rv < 0) {
status = unix_errno_to_ssh_stat(errno);
sftp_reply_status(client_msg, status, NULL);
ret = SSH_ERROR;
} else {
stat_to_filexfer_attrib(&st, &attr);
sftp_reply_attr(client_msg, &attr);
}
return ret;
}
static int
process_readlink(sftp_client_message client_msg)
{